{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["GENE"], "input": "Differential regulation of the pre - C and pregenomic promoters of human hepatitis B virus by members of the nuclear receptor superfamily ."}
{"GENE": ["pre - C", "nuclear receptor superfamily"]}